Markus wrote:I was able to upload the file sap_security_restrictions with QPST. First QPST stopped with exception while uploading the file, but after enabling Factory Testmode with QXDM it worked. Now I get error:
Parameter StatusChange hat nicht den Wert CardReset
qmi_error = 0x0034
Can I help to somehow solve this error message?
admin wrote:I'll try to explain the whole rSAP problem:
All Qualcomm phones basically support rSAP inside their baseband software. But nearly all phones (except HTC, LG and some others) miss the software parts between Bluetooth and baseband. This is what my app does. It creates a Bluetooth service and routes the rSAP functions to the baseband/radio. The last step requires the system files, which hook into the "Radio Interface Layer".
Some time ago Qualcomm added another hurdle to access the rSAP functions in the baseband software. You need to create a file in the baseband file system. This is done with the QPST tool. If you don't, all rSAP functions return an "access denied" error. Recently newer phones don't even allow the creation of the file without a "Factory Test Mode" being active.
Maybe I should also mention that the baseband software is a whole system running next to Android which handles (among others) all radio connections and the SIM card. It is completely closed source! When you install LineageOS or some other custom ROM you still use the stock baseband software. So it doesn't really care which Android you use, except the ever increasing security restrictions of newer Android versions and Bluetooth problems because of the incomplete Android Bluetooth API.
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